ALSA: hda - Disable AMD SB600 64bit address support only
HDA driver disabled HD audio 64bit address support for all AMD
SB600/SB700/SB800 platforms with commit
09240cf429
due to one SB600 issue
reported by community, but we do not see the similar issue on
SB700/SB800 platforms.
This patch is to refine the workaround for SB600 only.
Signed-off-by: Andiry Xu <andiry.xu@amd.com>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
This commit is contained in:
parent
1c55d521f4
commit
dc4c2e6bde
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@ -2333,9 +2333,19 @@ static int __devinit azx_create(struct snd_card *card, struct pci_dev *pci,
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gcap = azx_readw(chip, GCAP);
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snd_printdd(SFX "chipset global capabilities = 0x%x\n", gcap);
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/* ATI chips seems buggy about 64bit DMA addresses */
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if (chip->driver_type == AZX_DRIVER_ATI)
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gcap &= ~ICH6_GCAP_64OK;
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/* disable SB600 64bit support for safety */
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if ((chip->driver_type == AZX_DRIVER_ATI) ||
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(chip->driver_type == AZX_DRIVER_ATIHDMI)) {
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struct pci_dev *p_smbus;
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p_smbus = pci_get_device(PCI_VENDOR_ID_ATI,
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PCI_DEVICE_ID_ATI_SBX00_SMBUS,
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NULL);
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if (p_smbus) {
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if (p_smbus->revision < 0x30)
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gcap &= ~ICH6_GCAP_64OK;
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pci_dev_put(p_smbus);
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}
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}
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/* allow 64bit DMA address if supported by H/W */
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if ((gcap & ICH6_GCAP_64OK) && !pci_set_dma_mask(pci, DMA_BIT_MASK(64)))
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